摘要:
A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process.
摘要:
Use a supported catalyst that includes a catalyst support and a combination of nickel, gallium, and, optionally, one or more of an alkali metal, an alkaline earth metal and a lanthanide to effect non-oxidative dehydrogenation of an oxygen-free gaseous stream that comprises an alkane such as ethane, propane or butane to a product stream that comprises a corresponding alkene such as propylene where the alkane is propane.
摘要:
A computer implemented method, information processing system, and computer program product manage web application firewall rule configuration. A web application is analyzed. A set of data elements within the web application is identified. Each data element in the set of data elements stores information that is sent from a web client to a web server. Each data element in the set of data elements is analyzed. A data type is associated with each data element in the set of data element. The data type describes a type of data stored by the data element. A web application firewall rule recommendation is automatically generated for each data element based at least on the data type associated therewith.
摘要:
Provided are techniques for generating a relational query. Information is collected from a query specification and a model for an On-Line Analytical Processing (OLAP) query having at least a first expression and a second expression. The collected information is used to generate a relational query to retrieve report data to be used to satisfy the first expression and the second expression.
摘要:
Mechanisms are provided for handling client computing device requests with adaptive rule loading and session control. The mechanisms partition a set of rules, into a plurality of filter sets with each filter set having a different subset of the set of rules and being directed to identifying a different type of attack on a backend application or service. A subset of filter sets is selected to be used to validate client computing device requests received from client computing devices. The selected filter sets are applied to requests and/or responses to requests. The mechanisms dynamically modify which filter sets are included in the subset of filter sets based on an adaptive reinforcement learning operation on results of applying the selected filter sets to the requests and/or responses to requests.
摘要:
Provided are techniques for generating a relational query. Information is collected from a query specification and a model for an On-Line Analytical Processing (OLAP) query having at least a first expression and a second expression. The collected information is used to generate a relational query to retrieve report data to be used to satisfy the first expression and the second expression.
摘要:
A plurality of templates for web application server firewall rules are generated. A vulnerability report for the web application is obtained. At least one web application server firewall rule is generated, using the vulnerability report and at least one of the plurality of templates. The at least one web application server firewall rule is tested. The at least one web application server firewall rule is deployed to run on the web application server firewall.
摘要:
At least one of an HTTP request message and an HTTP response message is intercepted. A corresponding HTTP message model is identified. The HTTP message model includes a plurality of message model sections. Additional steps include parsing a representation of the at least one of an HTTP request message and an HTTP response message into message sections in accordance with the message model sections of the HTTP message model; and binding a plurality of security rules to the message model sections. The plurality of security rules each specify at least one action to be taken in response to a given condition. The given condition is based, at least in part, on a corresponding given one of the message sections. A further step includes processing the at least one of an HTTP request message and an HTTP response message in accordance with the plurality of security rules. Techniques for developing rules for a web application server firewall are also provided.
摘要:
A method and system for detecting a source-related risk and generating an alert concerning the source-related risk are disclosed. Criteria of the source-related risk are defined. Thresholds associated with the source-related risk are defined. Every operation on an object is detected. If an operation on an object satisfies a criterion among the criteria or if the operation causes to exceed a threshold among the thresholds, an alert is generated for the operation.
摘要:
A supported catalyst and process for dehydrogenating a hydrocarbon, the catalyst comprising a first component selected from the group consisting of tin, germanium, lead, indium, gallium, thallium, and compounds thereof; a second component selected from the group consisting of metals of Group 8 of the Periodic Table of the Elements and compounds thereof, and a support comprising alumina in the gamma crystalline form. The catalysts are especially active and efficient when employed in concurrent flow in a dehydrogenation reactor having an average contact time between the hydrocarbon and catalyst of from 0.5 to 10 seconds